Articles tagged with Vortices
Scientists have successfully controlled the flow of electrons within layers of a superconductor using terahertz flashes. This technique enables precise switching on and off of superconductivity, paving the way for new applications in information processing.
Researchers discovered that the South pole vortex of Venus is composed of two main cloud layers, with centres of rotation at different altitudes forming a constantly evolving permanent structure. This phenomenon, known as super-rotation, occurs due to the planet's slow rotation speed and fast atmospheric rotation rate.
A new NASA study reveals that extreme cold, man-made chemicals, and a stagnant atmosphere contributed to the 2011 Arctic ozone hole. The Arctic's ozone levels were about 20% lower than its late winter average due to unusual atmospheric conditions.
University of Chicago physicists create linked and knotted vortex loops, a feat long elusive in lab experiments. Their work relates to turbulence, plasma physics, ordinary fluids, and superfluids, offering potential solutions to longstanding puzzles.
A study by UC Riverside researchers shows that hummingbirds produce two trails of vortices, one under each wing per stroke, to hover and control flight. This bilateral vortex structure provides more maneuverability for the bird but increases energy consumption.
Researchers from Russia, Spain, Belgium, the U.K. and the U.S. Department of Energy's Argonne National Laboratory have discovered a way to efficiently stabilize tiny magnetic vortices that interfere with superconductivity. This breakthrough could remove one of the most significant roadblocks to advances in superconductor technology.
Researchers at the University of Alberta have developed a new technique to analyze the Barkhausen Effect, providing critical information for rapid prototyping of magnetic computational devices. The method measures magnetic jumps in a special 'vortex' pattern and converts it into a probe of magnetic interactions on an atomic scale.
Researchers at Harvard University have created a new device that can detect and distinguish between different types of twisted light waves, which can add an extra level of multiplexing to communication systems. This could potentially increase the rate of data transmission over limited bandwidth.
Scientists have discovered a giant oval vortex on Saturn persisting long after the visible effects of the 'Great Springtime Storm' subsided. The vortex is characterized by high temperatures and unique chemistry, unlike Jupiter's famous Great Red Spot.
A team of scientists has developed integrated arrays of optical vortex beams on a silicon chip, which can be used to transmit multiple streams of information. This breakthrough could enable the creation of compact and high-density devices for applications such as sensing and microscopic particle manipulation.
A University of Utah study found that periodic changes in winds 15 to 30 miles high in the stratosphere influence deep-sea circulation patterns, affecting Earth's climate. The research revealed the North Atlantic as a sensitive area where warming or cooling from the troposphere can trigger downwelling events.
Researchers at Brookhaven National Laboratory precisely measured a key parameter of electron interactions called non-adiabatic spin torque, guiding the reading and writing of digital information. The findings define the upper limit on processing speed that may underlie a spintronic revolution.
Researchers at Berkeley Lab have discovered that magnetic vortex formations in ferromagnetic nanodisks exhibit asymmetric behavior, breaking the symmetry required for vortex-based data storage devices. This finding challenges the potential application of these vortices in non-volatile Random Access Memory (RAM) systems.
Researchers observed an intermittent motion of magnetic flux in a superconducting strip, resulting in alternating static and dynamic phases with zero and non-zero voltage peaks. The study's findings have potential applications for gate devices controlling on/off states in electrical systems.
The University of York team has developed electron beams with orbital angular momentum, enabling the efficient examination of magnetic materials. This breakthrough promises novel applications in nanoparticle manipulation and edge contrast detection.
Researchers developed novel plasma actuators using winding-shaped electrodes to induce three-dimensional variations in the shear layer, offering significant flexibility in flow control. These new designs adjusted the plasma-induced flow in the form of a ZNMF jet with streamwise and spanwise vortices.
A NASA satellite observed a record-breaking heat wave in the Great Plains during July, with temperatures soaring up to 20°F above average. The Atmospheric Infrared Sounder instrument detected a persistent high-pressure vortex that pumped hot air from the tropics into the region.
Physicists at Hamburg and Kiel University have found a regular lattice of magnetic skyrmions on a surface, consisting of cycloidal vortex spin structures with exceptional stability. The discovery was made using spin-polarized scanning tunnelling microscopy and confirmed by quantum mechanical calculations.
Researchers found that uneven temperatures in semiconductors can create electronic whirlpools and sideways magnetic fields, leading to a new effect on thermopower efficiency. The discovery could improve the efficiency of commercial semiconductor devices
A team of physicists has devised a theoretical framework that explains the real-time behavior of superfluids made of fermions, a crucial step towards studying neutron stars. The researchers used the world's most powerful supercomputer to simulate complex calculations, shedding light on the properties of these enigmatic objects.
Researchers have developed conceptual tools to visualize warped space-time, discovering vortex lines and tendex lines that describe gravitational forces. These tools allow for a better understanding of black holes, gravity, and the universe, enabling predictions of gravitational waves and solving long-standing mysteries.
Researchers at the University of Michigan have designed a ferroelectric material system that spontaneously forms small nano-size spirals, reducing power needed for polarization switching. This breakthrough has the potential to create memory devices with faster write speeds and longer lifetimes than current technologies.
Researchers created mini magnetic disks with slanted edges, which favor the formation of tiny magnetic vortices. This allows for efficient data processing and reduced power consumption compared to traditional memory storage systems.
Researchers observe fractional vortex state in strontium ruthenium oxide, potentially providing basis for topological quantum computing. The discovery may offer the first experimental evidence for an exotic state of matter predicted theoretically for over 30 years.
Hassan Aref, a Virginia Tech professor, has been awarded the G.I. Taylor Medal for his outstanding contributions to fluid mechanics research. His work includes shedding new light on chaotic motion and its applications.
Researchers at TUM used neutrons to observe the coupling between electric current and magnetic structure in a material. The discovery of magnetic vortices shows promise for developing new data storage systems that are stable and can be written to using weakly anchored electric currents.
A team of researchers has built a robotic hummingbird wing to discover how these birds manage to hover in gusty conditions. The robotic wing replicates the figure-eight pattern of a hummingbird's wings, creating vortices on both the downstroke and upstroke.
Researchers have developed racetrack memory, which uses magnetic tape and spin-polarized currents to store data at speeds of several hundred meters per second. This technology could enable computers to boot up instantly and access information 100,000 times more rapidly than traditional hard disks.
Researchers found harbor seals can track fish fins up to 35 seconds after passing, using the structure of vortices and jets in the wake. Guided by their whiskers, seals accurately detected fin direction with over 90% accuracy.
Researchers at Caltech have found a way to improve the efficiency of wind farms by using vertical-axis turbines in strategic arrays. By studying the vortices left behind by schools of fish, they discovered that alternating turbine rotations and staggering their placement can increase energy extraction up to 10 times.
Researchers at Brown University have observed a quantum-level phenomenon where electrons form odd, fluctuating magnetic waves in superconducting materials. These waves are promoted by superconductivity and disappear when more magnetic energy is applied.
A team of physicists from Bristol, Glasgow and Southampton universities have successfully created knots in optical vortices using holograms designed with knot theory. This new research demonstrates the physical application of an abstract branch of mathematics previously considered impossible to apply.
Researchers will investigate the role of vortices in normal and abnormal voice production, with a focus on unilateral vocal cord paralysis. The goal is to develop effective treatments that restore vortices and normalize vibrations.
Researchers have developed a new method of mixing tiny liquid volumes using magnetic particles suspended in a fluid, creating 'vortex field' stirring effects. The technique shows promise for mixing fluids in complex spaces and could lead to improved sensor sensitivity.
Researchers have discovered that maple seeds generate lift by creating a vortex, similar to insects and animals, which allows them to be carried aloft by the wind. The study suggests that plants and animals have converged on this aerodynamic solution for improving flight performance.
The Verification of Rotation in Tornadoes EXperiment 2 (VORTEX2 or V2) will study the origins, structure, and evolution of tornadoes from May 10 to June 13. Data collected will help researchers understand how tornadoes form and improve forecasts.
Researchers investigated coral skeleton formation and found systematic compositional variations, complicating paleoenvironmental change proxies. Meanwhile, a study on Venus' vortices revealed similarities with terrestrial hurricanes, potentially aiding atmospheric superrotation understanding.
A University of Michigan engineer has created a machine called VIVACE that converts slow-moving ocean and river currents into clean, renewable power. The device works by creating vortex-induced vibrations in the water, which are then converted into mechanical energy and electricity.
Researchers at the University of Arizona and University of Queensland create a new form of matter called a Bose-Einstein condensate, which can spontaneously spin up into rotating vortices resembling microscopic quantum mechanical hurricanes. This phenomenon occurs when atoms in the gas cool to near absolute zero.
Scientists have discovered that whale flippers and dolphin tails influence the shape of wind turbine blades, creating a more efficient design. The new design has been shown to reduce drag and increase lift, defying traditional engineering theories.
The 'eye of a hurricane' on Venus is an enormous 2000 km-wide vortex with a central core that appears bright in thermal infrared images, indicating high atmospheric gas movement. Scientists are still unsure what creates the complex and dynamic nature of this feature.
Researchers discovered that bats can generate a leading-edge vortex, increasing lift by up to 40%, allowing them to hover in mid-air. This finding challenges quasi-steady state aerodynamic theory and has implications for the design of slow-flying surveillance planes.
UC Davis researchers analyzed sediment cores from the Antarctic Ross Sea, revealing evidence of magnetic field vortices beneath the South Pole. This discovery contrasts with earlier studies at lower latitudes and may improve our understanding of core processes.
Research at MIT suggests that aquatic plants in rivers can help dampen storm surge, lower nutrient levels, and promote sediment accumulation. By understanding how water flows through plant canopies, ecologists can determine the optimal vegetation patch length and planting density for river restoration.
Researchers at the University of Bonn have discovered right-handed and left-handed magnetic vortices, which could be used to store information in hard disks. The discovery has potential practical applications, but the primary interest is in understanding the underlying principles of magnetism.
Researchers at Brown University have successfully captured the motion of a single electron in liquid helium using sound waves. The images show electrons moving through the fluid in snakelike paths, which are believed to be following vortex lines - a phenomenon akin to a tornado in superfluids.
Computer simulations of Hurricane Bonnie's movement show that pockets of warm humid air flowing from the hurricane's eye to its ring of thunderstorms boost energy, increasing storm strength. This 'turbocharger' effect helps hurricanes remain intense despite weakening influences like cooler ocean temperatures and wind shear.
Researchers studied the effects of the Mt. Pinatubo eruption on Earth's climate, finding that natural aerosols have a cooling effect and that coupled climate models should be tested for their response times. Additionally, scientists investigated the link between Antarctic and Indian Ocean temperatures, suggesting Subantarctic Mode Wate...
Physicists at JILA used vortex lattices to visualize defects in rotating patterns, which could aid in studying superconductors. The experiments simulated the behavior of superfluids and optical lattices, creating a new method for understanding material defects.
Researchers aim to shorten runway delays by creating near-axis swirls in trailing vortices, reducing turbulence and making runways usable more quickly. The study's goal is to demonstrate the feasibility of this approach and explain its physics.
A University of Colorado at Boulder researcher has designed compact vortex generators inspired by cephalopods, enabling more precise maneuvering and docking of underwater vehicles at low speeds. The technology may also be used to guide tiny capsules through the human digestive tract for disease diagnosis and medication delivery.
Researchers at Max Planck Institute have found a way to easily reverse vortex cores, creating a digital bit that is extremely stable. This mechanism can be used for a new magnetic storage concept, where magnetic pulses can efficiently reverse the vortex core with no losses and quickly.
Researchers at Rice University have decoded the three-dimensional structure of a tornado-like magnetic vortex no larger than a red blood cell. The discovery could lead to breakthroughs in ultra-high-density hard drive storage and non-volatile memory.
Researchers have created a conveyor belt for magnetic flux vortices in superconductors, allowing them to be removed from targeted regions and improving device performance. The conveyor belt is assembled out of a line of vortices controlled by a time-varying magnetic field.
A team of researchers from Johns Hopkins University and Los Alamos National Laboratory found that large fluid vortices raid their smaller neighbors in an energy grab, sustaining a steady-state inverse energy cascade. This phenomenon forms a food-chain of vortices, with larger ones preying on smaller ones.
Scientists have discovered a new magnetic phenomenon, 'displaced vortex states', that can increase the size of MRAMs, allowing for faster and non-volatile memory storage. This breakthrough could lead to improved performance and reduced wait times when turning on computers.
Researchers at Argonne National Laboratory discovered that magnetic vortices in nickel-iron alloy exhibit unique behavior when trapped within lithographically patterned ferromagnetic structures. The study, published in Nature Physics, shows promise for the development of faster and more energy-efficient electronic devices.
Researchers at Johns Hopkins University have developed a new type of magnetic memory cell that can store large amounts of information in a densely packed area. The cells, made up of tiny cobalt or nickel rings, are immune to stray magnetic fields and can be controlled on-demand.
Researchers create an optical vortex mask that eliminates starlight, allowing for direct observation of nearby planets. The device successfully images Saturn and its rings, paving the way for future exoplanet detection projects like the Terrestrial Planet Finder.
Pitt researchers Yadin Y. Goldschmidt and Eduardo Cuansing used computer simulations to find direct evidence of new vortex patterns in superconductors. These findings show that the vortices can behave differently in the presence of columnar defects, leading to two-stage melting instead of one at higher temperatures.